J. Addison School is proud to announce that we are an Official 2020 Top Choice Award Nominee! Thank you to all of those who have taken the time to nominate us! Now, we need your help to WIN! Voting is… more
Congratulations to the @jaddisonmbb for winning the Pinky Lewis championship in Hamilton at McMaster University! 🏆 We are proud of the hard work you have put in to accomplish this achievement.
The students today were welcomed by a local physiotherapist from the Canadian army. The students enjoyed learning about Rememberance Day and wore their poppies proud. We were also welcomed by a song performance by Montessori students!
There were over 60 day and dorm students that attended Canada’s Wonderland Halloween Haunt 2019. Students toured over 10 large haunted houses and went on various rides while having the time of their lives with their friends. A major thanks… more
On October 11, 2019 we had our Terry Fox Foundation Cheque presentation. Our final total for the Terry Fox Foundation donation comes to $4910, beating last year’s total by over $3000. We hope to do even better next year. Congratulations… more
On behalf of J. Addison and the kitchen staff we hope everyone has a safe long weekend and a Happy Thanksgiving. We hope everyone enjoyed their free Thanksgiving lunch. A major thanks to our Residence Council Leaders for decorating the… more
The Markham Fair 2019 was a huge success. The dorm students and montessori/jr students were in attendance and had a day full of fun and activities. The petting zoo was a great hit. Rain or shine the students had an… more
This year, J. Addison School’s students volunteered at the CIBC Run for the Cure Breast Cancer awareness. Great job to everyone that volunteered at the CIBC Run for the Cure this year! Your spirit and enthusiasm was amazing. We are… more
J. Addison had their annual Terry Fox Run, commemorating Terry’s inspirational Marathon of Hope. Our staff and students raised $4000. Everyone had a great time running, walking and playing the activities and games. It was amazing to see everyone.
J. Addison School attended the the Our Kids Private School Expo on Saturday September 28th, 2019 at the Roy Thomson Hall. Student Leaders and Staff spoke to prospective parents, guardians, agents and students of their experience! For more information about… more
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Montessori Programs Ages 3 to Grade 2 
Elementary School Grades 3 to 8 
Secondary School Grades 9 to 12 
Boarding Program Grades 7 to 12 
Summer Programs K to Gr. 12